<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<h2 align="center">Check Prime</h2>
<form name="f1" onsubmit="check_prime(event)">
Enter number
<br />
<input type="text" placeholder="check prime" name="t1" />
<input type="submit" value="check" />
</form>
<div id="ans"></div>
<script>
function check_prime(event) {
event.preventDefault();
flag=0;
let n = document.f1.t1.value;
for (let i = 2; i < n; i++) {
if (n % i == 0) {
flag=1;
break;
}
}
if(flag==0)
{
ans="Number is prime";
}
else
{
ans="Number is not prime";
}
document.getElementById("ans").innerText=ans;
}
</script>
</body>
</html>
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